A lower bound of Chernoff type for symmetric quantum hypothesis testing
A lower bound of Chernoff type for symmetric quantum hypothesis testing
复制标题
对称量子假设检验的切尔诺夫型下界
DOI:
--
复制
发表时间:
2006
期刊:
影响因子:
--
通讯作者:
A. Szkola
中科院分区:
文献类型:
--
作者:
M. Nussbaum;A. Szkola
We consider symmetric hypothesis testing, where the hypotheses are allowed to be arbitrary density operators in a finite dimensional unital Calgebra capturing the classical and quantum scenarios simultaneously. We prove a Chernoff type lower bound for the asymptotically achievable error exponents. In the case of commuting density operators it coincides with the classical Chernoff bound. Moreover, the bound turns out to be tight in some non-commutative special cases, too. The general attainability of the bound is still an open problem.